Magnetic separation of ore.



Q. BENT. MAGNETIC SEPARATION OF ORE.

APPLICATION FILED NOV. 30, 1908.

. Patented Apr. 5, 1910,

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INVENTOR ATTORN @um YL/Q WITNESSES Q. BENI. MAGNBTIG SEPARATION 0F ons.

APPLIUATXON FILED HOV. 30, 1908. 954,()15 Patented Apr. i5, 1910.

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WITNESSES 'UNITED sTATEs PATENT oEETcE.

QUINCY BENT, OF LEBANON, PENN'SiYLVAN'IA.`

MAGNETIC SEPARATION 0F ORE.

Spcoieation of Letters Patent.

Patented Apr. 5, 1910.

Application med November 30, 1908. Serial No. V465,070.

ration of Ore, of which the following is aV full, clear, and exactdescription.

The object of my invention is to provide a simple and eiicient processof magnetic- :111%7 separating pulverized ore.

Jy invention, as generally stated, consists in causing a stream ofliquid carrying the ore to flow downwardl adjacent a suitable magnet,and magnetica ly drawing the-magnetic particles of the ore laterallyaway from said stream and into a body of 1i uid extending laterallyfromv and connecte to the stream, while the tailings descend with orthrough the stream of water.

The invention further consists in mechanically advancing the magneticconcentrates through the laterally extending body of liquid, and into anu wardly flowing stream of liquid through Wliich the magneticconcent-rates descend, while the tailings in suspension are carriedupwardly by the upwardly flowing stream.

The invention consists in the novel process which will be hereinafterfully described and claimed.

Reference may be had to my application for a patent for improvement inmagnetic ore separating apparatus, filed November 30, 1908, Ser. No.465,071.

In the drawings -Figure 1 is a plan View of an ore separating apparatusadapted for use in connection with my improved process.

Fig. 2 is a longitudinal, vertical section thereof. Fig. 3 is atransverse, vertical section of the apparatus, as 'on the line 3-3 ofFig. 2. Fig. 4 is a horizontal section as on the line Li--liof Fi 2.

I shall first describe a suitable a paratus by means of which my improveprocess may be performed. l t

i designates a vertically-arranged, Waterreceiving settling chamber, and6 designates a vertically-arranged water-receivin washn ing chamber. Thechambers 5 and are located a sli ht distance apart, and they areconnected y a c linder 7 forming a Waterpassageway S w ich extendsbetween and communicates with the chambers and 6, the passageway 8 beinglocated above the bottoms of said chambers.

Surrounding the cylinder 7 and passageway 8 therein is a solenoid 9which is cated adjacent the chamber 5. This solenoid 9 also surrounds amagnetic pole piece 10, 60 which extends part Way around and rests uponthe cylinder 7. Electric current is supplied to the solenoid 9 in-theusual manner, to produce the magnetic action thereof.

-Extending centrally through the passage- Way 8 and also through thechambers 5 and 6, and beyond the walls thereof, is a shaft 1l which ismounted to rotat'e in suitable bearings 12 and 13 secured to the outerwalls of the chambers 5 and 6 respectively. The 70 bearings 12 and 13are rovlded with suitable stuing boxes 14 an 15 res ectively, to preventleakage of waterfrom tlie chambers 5 and 6 through the openings throughwhich the shaft 11 extends. 75

The shaft 11 is provided with a screwconveyer 16 which is located withinand extends the entire length of the passageway 8, the pur ose of thescrew 16 being to mechamcal y advance the magnetic concen- B0` tratesthrou h the passageway 8 in a direction away rom the chamber 5 towardthe chamber 6. One end of the shaft 11 is prov vided with a .suitablepulley 17 by means of which the shaft und therewith the screw conveyor16 may be rotated.

The upper dportion of the settling chamber 5 is provide with an inletpassageway 18' leading from a compartment 19 which` receives the watercarrying the ore from a feed pipe 2 0. The interior'of the settlingcham- )er 5 is provided' with a ballie wall 21 which extendstransversely of Athe chamber and 1s located between the inlet o ening I8thereof and the passageway 8. e lower portion 915 of the^ chamber 5 isprovided with a artition 22 xtending transversely of the c amber 5 be owthe passageway 8, "and dividing the lower portion of said chamber.

The lqwer portionf the chamber 5 Iis 100 provided with two outletopenings 23 and 24, one located on one side and the other on theotherside of the partition 22, and leading from the o enings 28 and 24 are pies 25 and 42G whic may extend to any sulla )le 105 point of discharge.

The upper portion of the chamber ti is provided with an overflow oroutlet opening 27 which communicates with one cnd of a pipe 28, theother end of which. may ex- 11o tend to any suitable point of discharge.l

The lower portion or bottom of th(` chambei' G is provided with an inletopening 29 which communicates with a downwardly ex tending short pi e onthe lower end of which is secure a vortex water-admission device 31, comrising a central opening or chamber 32 ang a circular chamber 33surrounding the central opening 32. The wall between the chamber 33 andthe central opening 32 is provided with tan lentiallyarranged o Jenin 1s345 through which Water ma pass rom tlc chamber 33 to the centra opening32, and the chamber 33 is provided with a tan entially-arrangedwaterinlet opening 35 w iereby when water is sup plied to the device 31through the opening 35, the Water will be given a rotating motion duringits passage through the chamber 33 and openings 34 into the centralopening 32, wherein the water continues to rotate as it passes throughthe inlet o ening 29 of the washing chamber 6. The ower portion of thecentral opening 32 communicates with an o tlet pipe 36 for the water,which pipe may glead to any suitable point of discharge.

I s mll now describe my improvedprocess as performed with the aid oftheapparatus just described.

lVatertcarrying the crushed or pulverized ore is supplied to thecompartment 19 through the feed pipe 20 from any suitable source, andanother stream of water is Supplied to the vortex admission device 31through vthe inlet opening 35 therein; and power is supplied to thepulle 17 to rotate the shaft 11 and therewith t e screw-conveyor 16, andelectric current is supplied to thc solenoid t). The main bod f of thestream of water supplied to t ie device iiows upwardly through theWashing chmul ber 6, and .luring its upward flow through said chamberthe water continues the rotating motion given to it by the vortex device31 until the water overiiows at 27 and passes from. the apparatusthrough the )ipe 28 to a suitable oint of discharge. art of the streamci] Water supplied -to the device 31 however, flows downwardly and outthrough the pipe B. The Stream of water carrying the ore arifdintroduced ato the compartment 19 through the feed ipe`20 Hows fromsaid,

compartment throng the inlet opening 18 to the up er portion of thesettlin chamber 5, then ownwardly through sai chan'ber und out throughthe pipes 25 and 26 leading from the lower portion thereof.

A part of the stream of water introduced through the` feed pipe 20 maypass through the passageway 8 and a partof the stream of waterintroduced through the vortex device 31 may also pass through theasseveway 8. This, however, is controllo by t ie relative forces of thetwo streams. It will be observed; that the passageway 8 is located belowthe water level in each chamber 5 and 6. As the crushed or pulverizedore descends through the settling chamber 5 with or through the streamof water, the magnetic particles are drawn laterally from the chamber 5and into the passa cway 8 under the magnetic influence of t e solenoid9, while the tailins are permitted to descend to the bottom o thechamber 5 and are carricd oft to any suitable point of discharge throughthe pipes 25 and 26. As the stream of Water carrying the ore enters `theup er portion of the settling chamber 5, it stri es the battle wall 21which causes the heavy tailings to descend to the pipe 25 while thelighter or middlings, descend to the pipe 26. The magnetic concentratesare drawn into the passageway 8 under the influence of the solenoid 9and they are mechanically advanced through said assageway from thesolenoid and discharges into the upwardly flowing stream of water andinto the Washing chamber 6 by the action of the screwconveyer 16. T 1emagnetic concentrates descend through this upwardly flowing stream ofwater while said stream carries upwardly and discharges from theoverflow 27 and pipe 28 any small non-magnetic particlcs in suspensionin the water that may pass through the passageway 8, thus effecting afinal and complete Washing of the magneto concentrates which descendfrom the. upwardly flowing stream of water` through the lower portion ofthe central o ening of the vortex device 31 and out t rough the pipe 36which leads to any suitable point of discharge. The magnetic 10oconconirates` :1s` they pass through the pas` sageivay S, areIliohirized. under the iniuence of the solenoid 9, which causes theparticles to assemble themselves in groups, thus causing them to descendthrough the upwardly fiowing stream more rapidly than they would descendin their separated condition. This ra iid descent of the magneticconcentrates ena les me to cause the stream of Water to flow upwardlchamber 6` very rapidly ,Without carrying with it any ov the magneticconcentrates, therapid flow of the stream insuring a thorough Washing ofthe concentrates.

Byrotating the stream of Water during its upward llow through theWashing chamber 6, it is caused to not upon the descending concentratesin a substantially uniform manner throughout the washing chamber.

When desirable, I make the force of thestream Howing upwardly throughthe chamber 6 strong enou h to cause a slight. water current to How trough the passageway 8r toward the settling chamber 5, which tendstorepel any nommagnetic material which might be carried from the chambert5 into the passageway 8 mechanically with the concentrates.

l. The process of separating pulveriz'ed 130 through the 110 lll) ore,ronsisting in causing a stream of liquid oarrying the ore to l'lo'wdownwardly, inagi-y netioally drawing' magnetic particles laterally fromSaid Stream and into a body of liquid extending laterally from and conneemt] to said Stream while the tailings descend with said Stream.Anieehanieally advancing the magnetic concentrates through Said body o'liquid and into an upwardly tlowing stream ot' liquid. and permittingthe -niagnetie eoneentrates` to descend through said upwardly tlowinfstream while tailings in `nuspension are farried upwardly thereby. 2.The process of separating pulverized ore, consisting in causing alStream of liquid earryiug the ore to flow downwardly, 1nagnettieallyAdrawing magnetic particles laterally from said stream and into a bodyof liquid extending laterally from and connected to said streain whilethe tailings descend with sait strewn, mechanically advancing themagnetic concentrates through Said bodyr of liquid and into an upwardlyiowing' and rotating Stream of liquid7 and permitting the magneticconcentrates to deseend through Said upwardly flowing stream whiletailings in suspension are carried upwardly thereby.

3. The proceas of Separating pulverized ore, eoi'isinting in causing astream of liquid carrying the ore to flow downwardly, inagneticallydrawing magnetic particles laterd ally from Said stream Iand into a bodyof liquid extending laterally from and conneeted tio Said Stream whilethe tailings de seend with yaid 4dream, nleehanically :id-- vancing themagnetir. eonrentrutes through said body of liquid and into an upwardlyflowing Stream of liquid, permittinga the ma netie concentration` todescend through sai upwardly flowing stream while tailings in Suspensionare carried upwardly thereby. and withdrawn] the magneticeoueeint.ratenA from the upwar( ly flowing `@tire-.un o'l' liquid` 4.The process of Separating pulverized ore, consisting in fauiug astrean'i of liquid Carrying the creto tlow dowuwarill'y mag neticallydrawing magneti@ partirltw latervr ally from said stream and into a bodyot' liquid extending laterally from and con neeted to said streamwliiletlie tailings descend with said stream, permittingr the inagneticconcentrates to descend through Said upwardly tiowing stre-ain whiletailiuge. in suspension are carried upwardly thereby. mechanicallyadvancing the magnetic eonvv contratos through Said body of liquid'nndinto an upwardly (lowing` and rotating stream of liquid, andwithdrawinnr the magnotie` concentrates from the ulilwardly llowin androtating stream of liquid.

n testimony whereof. l hare hereunto alixed my signature.

QUINCY BENT.

lVitinesses GRANT l/VEIDMAN, CLEMENT G. Siurrn.

